Two Vic drivers have cars impounded

Two cars have been impounded after their drivers were clocked speeding along Melbourne's Western Freeway.

An 18-year-old man, who had only held his licence for four months, was allegedly caught driving at 181km/h late on Saturday, while a 39-year-old man was allegedly detected travelling at 174km/h on Monday, and later recorded a breath test of 0.179.

Both men had their cars impounded and are expected to be charged on summons for traffic-related offences.